Tube orifice for pressure dispensing container

Abstract

A tubular device for providing a very small passageway suitable for discharging a product and a pressurized material from a container of the aerosol type, wherein the product and the material are disposed, upon opening of a control valve at one end of the tubular device. The tubular device is formed by twisting a plurality of elongate filaments in a rope-like fashion along the lengths thereof to forcefully close the surfaces of the filaments together along the entire length, thereby providing an elongate passageway between the twisted filaments. The exposed surfaces of the twisted filaments are coated with a suitable material for sealing the tube along its entire length.

I claim: 
     
       1. An elongate substantially tubular device for conducting fluids comprising: a. a plurality of filaments, not more than four, constructed of substantially smooth impervious and ductile material, said filaments being uniformly and forcedly twisted together along their entire length to close the surface of said filaments to define a single axial passageway therebetween; and   b. a coating of material on the outer exposed surfaces of the twisted filaments, said coating being in sealing contact with the outer surfaces of the filaments throughout their length but not penetrating into said axial passage, and having a smooth cylindrical outer surface means for sealingly fitting into a cylindrical bore.   
     
     
       2. A tubular device as in claim 1 comprising only three filaments. 
     
     
       3. A device as in claim 1 wherein the filaments are metal. 
     
     
       4. A device as in claim 1 wherein the filaments are glass. 
     
     
       5. A device as in claim 1 wherein the filaments are plastic. 
     
     
       6. In a fluid dispensing device having a container portion provided with a top having a cylindrical bore through which fluid within the container portion is to be dispensed, the combination of: a. a plurality of filaments, not more than four, constructed of substantially smooth impervious and ductile material, said filaments being uniformly and forcedly twisted together along their entire length to close the surface of said filaments to define a single axial passageway therebetween; and   b. a coating of material on the outer exposed surfaces of the twisted filaments, said coating being in sealing contact with the outer surfaces of the filaments throughout their length but not penetrating into said axial passage, and having a smooth cylindrical outer surface sealingly fitted into said cylindrical bore of the container portion so as to permit dispensing of said fluid through said axial passageway.   
     
     
       7. A dispensing container nozzle comprising an elongate outer body portion having a smooth, cylindrical outer surface at least at one end portion thereof whereby to present a plug adapted to fit sealingly within a cylindrical bore of a dispensing container; and means for defining a passageway axially through said outer body portion whereby to dispense fluid from a dispensing container through said one end of the outer body portion to the opposite end thereof, said means consisting of three filaments each having a smooth outer surface, said filaments being helically twisted together tightly to interengage all of the three said outer surfaces thereof and thereby define said axial passageway, and said filaments being embedded within said outer body portion substantially centrally thereof and extending from said one end to said opposite end thereof.